AT 1435D, 3/172IN WHILE ESCORTING A CONVOY FROM SCANIA TO ANACONDA WAS ATTKD BY A ROCK THROWER IVO TAJI(MC291032117). THE SECURITY ELEMENT FIRED AN M16, STRIKING THE ROCK THROWER. EXTENT OF INJURIES TO ROCK THROWER UNKNOWN, ING CARRIED OFF INDIVIDUAL. NO INJURIES OR DAMAGE TO US PERSONNEL OR EQUIPMENT. CONVOY CONTINUED ON TO ANACONDA.